Improvement in car-axle boxes



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Specication forming part of Letters Patent No. 1/LsdadatedNovember.11876; application tiled :.september9,1s7o.- v ,-f

To all whom 'it may-concern:

Beit known that I, OWEN ToMLrNsoN, of Bombay, East Indies, have inventeda new and Improved Gar-Axle Box, of which the following is aspecification:

In the accompanying drawing, Figure l represents a vertical longitudinalsection of my improved car-axle box, taken on line :v so, Fig. 2. Fig. 2is a vertical transverse section of the same on line y y, Fig. l; andFigs. 3 and 4 are detail side views 0f the washers, with side springs,arranged to fit the axle to keep out the dust.

Similar letters of reference indicate corresponding parts.

The invention relates to certain improvements in car-axle boxes designedto eiect a thorough lubrication thereof; and it consists in theconstruction and arrangement of parts, hereinafter more fully described,and then pointed out in the claim.

In the drawing, A represents an axle-box, which may be cast in twoparts, that are horizontally connected by outer side flanges and bolts,or cast in one piece, with a detachable rear section, as described. Theaxle-box is supplied with oil through a movable front cap or face plate,B, that is attached by a suitable packing-ring and fastening-screws. Thecar-axle G has suitable collars at both ends ot' its journal, betweenwhich a journalv bearing, D, of corresponding shape is placed,

and retained by an iron keep, E, that is fitted into the top part of theaxle-box in such a manner as to perfectly secure the brass or otherbearing D in" its proper place, and also admit the withdrawing of thebearing and ready replacing of it at a saving of time and labor. Thekeep or retaining-plate E holds the journal-bearing D by a dovetail orother connection against a change of position in lateral direction, andby pressing against a projecting rear shoulder, a, of the bearing inlongitudinal direction. The keep or retainingplate E is steadily held inposition by means of a stop-shoulder, b, of the top part of the axle-boxentering a recess of the keep, and by an angular cheek or bearing, d, ofthe faceplate pressing against the forward-extendin g handle end of thekeep. Lubricating-padsF, of suitable material, are arranged at bothsides offthe',journal-'boering irland `supplied,with

oil by capillary attraction from the oil-receptacle and base-pad at thelower part of the box. The required amount of oil to moisten the sidepads for action may be supplied by top recesses and side holes of thekeep, as shown in Fig. 2. The side packings and sustaining-cheeks aremainly designed to take up the surplus lubricating material by capillaryattraction, and retain it for the economical feeding to the journal andjournal-box. As the oil fills up the lower oil-space, it is supplied inconsiderable quantity to the axle, and the side packing serves toregulate the supply and make the same uniform. The required amount ofoil, and not more, is thereby supplied,'which makes the box veryeconomical.

The lubricating-pads F are securely held in position on the journal ofthe axle at bothsides of the bearing D by the ironkeep and projectionsor cheeks e at both sides of the axle-box. The pads insure thoroughlubrication of the journal without necessitating a too frequentrefilling of the axle-box. The bottom pad F1 is retained by perforatedlongitudinal side and bottom plates F2, and pressed up by suitablesprings F3, placed into the pad on the axle. The oil is fed from theoil-receptacle through the perforated plates to the bottom pad, and, bycapillary attraction along the revolving axle, to the side pads and tothe journal-bearing. The rear part of the axle-box A is closed by meansof wooden or other washers G, that are placed into a rear chamber orreceptacle, G', of the axle-box. A central tongue, f, at the lower partof the chamber G fits into a slot or groove, f', of the washer, which ismade in two pieces, iitted together with single lap-joint. The sectionsof the washer are made to maintain a thorough lit on the axle by meansof a small steel spring, g, that is affixed to the outer edge of eachhalf of the washer, and intended to keep the washer-sections pressedgently, but continually, against the axle, the springs being compressedby the side walls of the axle-box. The wooden washer is provided at thelap-joint with a certain clearance or allowance, for admitting, with thewearing of the washer, the gradual closing up of the sections by theaction of the springs, while preserving atallV timesa close 'seating onthe axle,` so as to keep out impurities "that "tend'to' cltand Wear outthe journal. The brass bearing is readily changed by taking off themovable cap or face plate, slackening the side bolts 'that' hold the topand bottom castings together, inserting theminto the joint suitablepacking-1 pieces of steel or iron, and lifting, by a screwjack, theaxle-box. The iron keep or .top plate is thereby liberated, and may berai-sed clear` of the collar of the axle by the handle end` and drawnout, after whichthe defective brass bearing maybe removed and anothersnbsti-i tuted, the 'iron keep replaced, and the aXlebox tightened up'again. When the shell of` the axle-box is cast in one piece, thefaceplateisfirst retrieved, `the Vrearitittngfg-p'ieces l andwashers-are taken o?, and theMaXle-boxis then raised Jbyfa .serewjachand the ybearing changed, as before described.

Hafvjin g thus described myinvention, I claim Aas new and desire tosecure by Letters Patent y y Y Vrlh'eeo'nbi'neiti'on 'of "the box A,'having the internal side cheeks e, and the lubricating-pads F, with thedetachable keep E and bearing D,

as and for the pnlrpose'set forth.

OWEN momLrnsoN.

Witnesses:

GEORGE WILLIAM NORTH, Radcliffe Road, Hilchn. CHARLES ARNOLD,

Radcliff: ARoarLH'cl071ml

